Valve, Valve Block, Manifold Block manufacturer / supplier in China, offering OEM-Grade U-Cup Piston Seal with High-Speed 15m/S Reciprocating Performance, High-Performance Industrial Single-Acting U-Cup PTFE Piston Seal Ring with V-Shaped Spring, Factory Direct Sales High-Pressure Single-Acting U-Cup PTFE Piston Seal Ring for Hydraulic Cylinder and so on.